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<title>mod_speling － Apache 2.2 中文手册 [金步国]</title>
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<div id="page-content"><div id="preamble"><h1>Apache模块 mod_speling</h1>

<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="module">
<tr><th><a href="module-dict.html#Description">说明</a></th><td>自动纠正URL中的拼写错误</td></tr>
<tr><th><a href="module-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="module-dict.html#ModuleIdentifier">模块名</a></th><td>speling_module</td></tr>
<tr><th><a href="module-dict.html#SourceFile">源文件</a></th><td>mod_speling.c</td></tr>
</table>
<h3>概述</h3>


    <p>Requests to documents sometimes cannot be served by the core
    apache server because the request was misspelled or
    miscapitalized. This module addresses this problem by trying to
    find a matching document, even after all other modules gave up.
    It does its work by comparing each document name in the
    requested directory against the requested document name
    <strong>without regard to case</strong>, and allowing
    <strong>up to one misspelling</strong> (character insertion /
    omission / transposition or wrong character). A list is built
    with all document names which were matched using this
    strategy.</p>

    <p>If, after scanning the directory,</p>

    <ul>
      <li>no matching document was found, Apache will proceed as
      usual and return a "document not found" error.</li>

      <li>only one document is found that "almost" matches the
      request, then it is returned in the form of a redirection
      response.</li>

      <li>more than one document with a close match was found, then
      the list of the matches is returned to the client, and the
      client can select the correct candidate.</li>
    </ul>

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<div class="directive-section"><h2><a name="CheckSpelling" id="CheckSpelling">CheckSpelling</a> <a name="checkspelling" id="checkspelling">指令</a></h2>
<table border="1" cellpadding="0" cellspacing="0" bordercolor="#AAAAAA" class="directive">
<tr><th><a href="directive-dict.html#Description">说明</a></th><td>Enables the spelling
module</td></tr>
<tr><th><a href="directive-dict.html#Syntax">语法</a></th><td><code>CheckSpelling on|off</code></td></tr>
<tr><th><a href="directive-dict.html#Default">默认值</a></th><td><code>CheckSpelling Off</code></td></tr>
<tr><th><a href="directive-dict.html#Context">作用域</a></th><td>server config, virtual host, directory, .htaccess</td></tr>
<tr><th><a href="directive-dict.html#Override">覆盖项</a></th><td>Options</td></tr>
<tr><th><a href="directive-dict.html#Status">状态</a></th><td>扩展(E)</td></tr>
<tr><th><a href="directive-dict.html#Module">模块</a></th><td>mod_speling</td></tr>
<tr><th><a href="directive-dict.html#Compatibility">兼容性</a></th><td>CheckSpelling was available as a separately available
module for Apache 1.1, but was limited to miscapitalizations. As
of Apache 1.3, it is part of the Apache distribution. Prior to Apache
1.3.2, the <code>CheckSpelling</code> directive was only available in the
"server" and "virtual host" contexts.</td></tr>
</table>
    <p>This directive enables or disables the spelling module. When
    enabled, keep in mind that</p>

    <ul>
      <li>the directory scan which is necessary for the spelling
      correction will have an impact on the server's performance
      when many spelling corrections have to be performed at the
      same time.</li>

      <li>the document trees should not contain sensitive files
      which could be matched inadvertently by a spelling
      "correction".</li>

      <li>the module is unable to correct misspelled user names (as
      in <code>http://my.host/~apahce/</code>), just file names or
      directory names.</li>

      <li>spelling corrections apply strictly to existing files, so
      a request for the <code>&lt;Location /status&gt;</code> may
      get incorrectly treated as the negotiated file
      "<code>/stats.html</code>".</li>
    </ul>


    <p>mod_speling should not be enabled in <a href="mod_dav.html">DAV</a>
    enabled directories, because it will try to "spell fix" newly created
    resource names against existing filenames, e.g., when trying to upload
    a new document <code>doc43.html</code> it might redirect to an existing
    document <code>doc34.html</code>, which is not what was intended.
    </p>

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